*{  margin: 0px;
    padding:0px;
}
body{  background-image:url(../images/a2.png);  background-repeat: no-repeat;  background-size:100%;}
#main{  margin:15% auto;  width:300px;  height:150px;  font-size: 14px;  color: #666;  }
.srk{  display: block;  height: 16px;  width: 328px;  padding: 11px 10px;  margin-right: 10px;  border: 1px solid #ddd;  font-size: 14px;  color: #666;  }
#button_dr{
    background-color:#7A8B8B;
    width:300px;
    height:50px;
    color:#FFF;
    font-size: 16px;
    font-weight: 700;
    border:0;
    position:relative;
    left:20px;
}
#button_dr:hover {
    background-color:#8B7B8B;
}
.a{collor:#7A8B8B
text-decoration:none}
.a:hover{collor:#00868B}
a{text-decoration-line: none;color: #7A8B8B}